8620

  • 1.6523, G86200, SNCM220H

SpecificationASTM A322, ASTM A29

This steel grade is defined as low carbon alloy steel with good wear resistance. After heat treatment or carburized hardening, it has good surface hardness. In addition, when compared with the low carbon steel of the same series, it has better strength and toughness.

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Introduction

Product properties

˙High strength

˙High toughness

˙Higher strength than that of 8615 and 8617

Industrial Applications

˙Foprged camshaft

˙Fasteners

˙Gear

Specifications

Chemical composition (wt. %)

Element
C
Si
Mn
P
S
Ni
Cr
Mo
Cu
Min.
0.18
0.15
0.70
-
-
0.40
0.40
0.15
-
Max.
0.23
0.35
0.90
0.025
0.025
0.70
0.60
0.25
0.35

Physical Property

Density (g/cm^3)
7.87

Thermal Expansion Coefficient

Temperature (℃)
10^-6/℃
20
12.2

Thermal Conductivity

Temperature (℃)
W/m·K
20
46.6

Mechanical Property

Items
Annealed
Hardness (HBW)
231 max.

Size Ranges

Products
Diameter (mm)
Length (mm)
Rolled bar
10~95
3,000~5,700
Forged bar
95.2-600
3,000~5,700
Billet
130x130, 140x140, 150x150, 160x160
7,000 max
Flat bar
80x80 (min.)
Based on the customer needs

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